The Bombay Stock Exchange benchmark Sensex today rose over 174 points in opening trade on fresh capital inflows by foreign funds. The sensex was trading at 16143, up by 221 points when reports last came in. Similarly, the wide-based National Stock Exchange index Nifty regained 4,800 points level to trade 66 points, at 4824 points. Brokers said firming trend on the Asian markets and expectations of positive industrial production data, to be released by the government later today, mainly buoyed the trading sentiments. Meanwhile, Hong Kong's Hang Seng edged higher by almost 1.45 per cent in the morning trade, while Japan's Tokyo Stock Exchange remained closed today.